One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,21,25,22,26,33,40)(19,23,30,37,29,36,43,47)(20,24,32,39,31,38,44,48)(27,34,41,45,28,35,42,46)(2,5)(6,8)(9,11,12,15)(10,13,14,16)(17,19)(18,23)(20,28)(21,30)(22,29)(24,35)(25,37)(26,36)(27,31)(32,42)(33,43)(34,38)(39,46)(40,47)(41,44)(45,48)(10,14)(13,16)(17,20)(18,24)(19,27)(21,32)(22,31)(23,34)(25,39)(26,38)(28,29)(30,41)(33,44)(35,36)(37,45)(40,48)(42,43)(46,47) involution — undirected(1,3,4,7)(2,6,5,8)(17,20)(18,24)(19,28)(21,32)(22,31)(23,35)(25,39)(26,38)(27,29)(30,42)(33,44)(34,36)(37,46)(40,48)(41,43)(45,47)(19,29)(20,31)(23,36)(24,38)(30,43)(32,44)(37,47)(39,48) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.